JAN. 1896. FLORA OF W. VIRGINIA MILLSPAUGH & NUTTALL. 139 



S. conicola Sa.cc. 



On dead cones of Tsuga Canadensis, Dec. 16, 1893. Spores 

 10 x 3 /j. (Nut tall, 1311). 



S. Gaultherise C. & P. 



On Gaultheria procumbens, June 8, 1894 (Nuttall, 1534). 



S. nysssecola Cooke? 



On Nysa aquatica, Oct. 10, 1894 (immature) (Nuttall, 1719, 607). 



DIDYMELLA Sacc. 



D. Physocarpi E & E., Proc. Phila. Acad., 1894, 335. 



TYPE HABITAT: On Opulaster opulifohus, May 12, 1894 (Nuttall, 

 1507, 488). 



Perithecia gregarious, covered by the pustuliform epidermis, 

 about .25 mm. diameter, white inside, depressed-globose, the 

 papilliform ostiolum barely penetrating the epidermis. Asci 

 clavate-cylindrical, short-stipitate, 85 to 90 x loto 12 //, paraphy- 

 sate, 8-spored. Sporidia biseriate, fusoid, 4-nucleate, uniseptate r 

 constricted at the septum, hyaline, 19 to 22 x 4 to 5 //., mostly a 

 little curved. 



MELANCONIS Tul. 

 M. modonia Tul. 



On Castanea dentata, Nov. 14, 1893 (Nuttall, 1274, 221). 



HERCOSPORA Tul. 

 H. Tiliae (Fr.) Tul. 



On Tilia heterophylla, Feb. 16, 1894. Spores 18 x 7.5 /j. (Nuttall, 

 1834, 346). 



DIAPORTHE Nits. 

 D. Gladioli E. & E. ? 



On Caulophyllum thalictroides, July 8, 1894. Asci 38 x 5 to 7 <>., 

 spores septate, 4-nucleate, about 10 x 3 // (Nuttall, 1603, 553). 



D. Aralise E. & E., Proc. Phila. Acad., 339 (1894). 



TYPE HABITAT: On Aralia spinosa, Feb. 2, 1894 (Nuttall, discov. 

 1356, 312). 



Stroma buried in the wood and circumscribed by a penetrating, 

 black line, elliptical, about 5x4 mm. Perithecia buried in the 

 stroma, few (6 to 10) globose, .5 10.75 mrn - diameter, their short- 

 cylindrical ostiola projecting from a black, tubercular disk seated 

 on the surface of the wood and perforating the pustuliform- 

 elevated epidermis, but scarcely rising above it. Asci clavate- 

 cylindical, 40 to 45 x 5 to 6 //., paraphysate, 8-spored. Sporidia 

 biseriate, oblong, 4-nucleate, becoming uniseptate and slightly 

 constricted, hyaline, obtuse, 12 to 13 x 2.5 to 3 //. 



Allied to and resembling D. ocularia C. & E. 



D. CHOROSTATE Halesise E. & E., Proc 1 . Phila. Acad., 339 (1894). 



TYPE HABITAT: On dead limbs of Mohrodendron Carolinum, 

 May, 1894 (Nuttall, discov. 1541). 



